A few improvements:

* Use the new RPC format to avoid sourcing the PKGBUILD.
* A separate switch for curl's insecure mode: --nossl.
* Clone the AUR git repos instead of downloading the targballs.

prm

@@ -8,6 +8,8 @@ _self="${0##*/}"
 cfg_workdir="$PWD"
 cfg_aur_url="https://aur.archlinux.org"
 
+cfg_curl_opts=( '--silent' '--location' )
+
 err() { printf "$@" >&2; }
 
 _cat() { while read -r; do printf '%s\n' "$REPLY"; done }
@@ -21,7 +23,7 @@ usage() {
 		          -S        Search only in the sync db. Implies -s.
 		          -A        Search only in AUR. Implies -s.
 		        -d        Get the package sources (default). Set twice to also get the dependencies.
-		          -f        Force downloading package sources even if they are already present in the working directory.
+		          -n      Don't update existing git repos.
 		        -w <dir>  Set the working directory.
 	EOF
 }
@@ -29,7 +31,7 @@ usage() {
 aur.search() {
 	declare i aur_api_search_data aur_search_result_num aur_search_results version description
 
-	aur_api_search_data=$( curl -skL "${cfg_aur_api}?type=search&arg=${1}" )
+	aur_api_search_data=$( curl "${cfg_curl_opts[@]}" "${cfg_aur_api}?type=search&arg=${1}" )
 	aur_search_result_num=$( jshon -e resultcount -u <<< "$aur_api_search_data" )
 
 	# Exit if nothing was found
@@ -52,7 +54,7 @@ aur.search() {
 aur.info() {
 	declare pkg_aur_info aur_query_result
 	
-	pkg_aur_info=$( curl -skL "${cfg_aur_api}?type=info&arg=${1}" 2>/dev/null )
+	pkg_aur_info=$( curl "${cfg_curl_opts[@]}" "${cfg_aur_api}?type=info&v=2&arg=${1}" 2>/dev/null )
 	aur_query_result=$( jshon -e resultcount -u <<< "$pkg_aur_info" )
 
 	(( aur_query_result )) || { return 1; }
@@ -69,33 +71,40 @@ aur.get() {
 	read -r pkg_base < <( jshon -e results -e PackageBase -u <<< "$pkg_aur_info" )
 	tarball_path="/cgit/aur.git/snapshot/${pkg_base}.tar.gz"
 
-	(( flag_force )) || {
-		[[ -d "${cfg_workdir}/${pkg_base}" ]] && {
-			printf "Found %s in %s, skipping. Use -f to override\n" "${pkg_base}" "${cfg_workdir}"
-			return 17
-		}
-	}
-
 	cd "$cfg_workdir"
+	
+	printf 'Working in %s\n' "${cfg_workdir}"
 
-	printf "Working in %s\n" "${cfg_workdir}"
-
-	printf "Downloading %s\n" "${pkg_base}"
-	{ curl -skL "${cfg_aur_url}${tarball_path}" | gzip -d | tar x; } || {
-		err "Fail!\n"
-		return 1
-	}
+	if [[ -d "$pkg_base" ]]; then
+		if ! (( flag_nopull )); then
+			printf 'Updating %s\n' "$pkg_base"
+			cd "$pkg_base"
+			git pull || {
+				err 'Fail!'
+				return 21
+			}
+		fi
+	else
+		printf 'Cloning %s\n' "$pkg_base"
+		git clone "https://aur.archlinux.org/${pkg_base}.git" || {
+			err 'Fail!'
+			return 19
+		}
+	fi
 
 	if (( flag_get_deps )); then
 		cd "${cfg_workdir}/${pkg_base}"
-		source PKGBUILD
 
-		for i in "${depends[@]}" "${makedepends[@]}"; do
+		read -d '' -r -a depends < <(
+			jshon -e results -e Depends -a -u -p -p -e MakeDepends -a -u <<< "$pkg_aur_info" 2>/dev/null
+		)
+
+		for i in "${depends[@]}"; do
 			dep_name="${i/[<>=]*}"
 			aur_api_multireq+="&arg\[\]=$dep_name"
 		done
 		
-		aur_deps_api_data=$( curl -skL "${cfg_aur_api}?type=multiinfo${aur_api_multireq}" )
+		aur_deps_api_data=$( curl "${cfg_curl_opts[@]}" "${cfg_aur_api}?type=multiinfo${aur_api_multireq}" )
 		aur_deps_count=$( jshon -e resultcount <<< "$aur_deps_api_data" )
 
 		if (( aur_deps_count )); then
@@ -107,9 +116,9 @@ aur.get() {
 				aur.get < <(aur.info "$i")
 				_result="$?"
 
-				(( _result > 0 && result != 17 )) && {
+				if (( _result > 0 && result != 17 )); then
 					return "$_result"
-				}
+				fi
 			done
 		fi
 	fi
@@ -200,7 +209,9 @@ main() {
 				cfg_workdir="$2"
 				shift;;
 
-			(-f) flag_force=1;;
+			(-n) flag_nopull=1;;
+
+			(--nossl) cfg_curl_opts+=( '--insecure' );;
 
 			(-*)
 				err "Unknown key: %s\n" "$1"